Cotton gin



Sept. 1, 1936. GR|ME$ 2,053,190

COTTON GIN Filed May 14, 1936 3 mac/whom 7? 5. firjm GUM/14' Patented Sept. 1, 1936 PATENT OFFICE COTTON GIN Thaddeus S. Grimes, Columbus, Ga., asalgnor to Lummus Cotton Gin Company, Columbus, 6a., v.a. corporation of Georgia Application May 14, 1936, Serial No 'wfl" 12 Claims. (Cl. 19-59) This invention relates to cotton gins of that type in which an air blast is used to remove the lint from the gin saws. The main object of this invention is to provide t a gin of the class, described with means for removing from the gin, such motes as are thrown oil the saws by centrifugal force before they arrive at the air blast nozzle.

Another object of the invention is to provide a 10 gin of the class described with a partition to pre; vent motes thrown off the saws by centrifugal force from falling into the lint flue, and with means for removing by air blast, such motes as are carried by the saws past such partition.

ll Another object ofthe invention is to provide a gin of the class described with a partition and carrying means so located to each other as to prevent any accumulation of motes on top edge of partition.

, Other objects of the invention will become apparent as the detailed description thereof proceeds.

The single figure of the drawing is a central vertical section through a cotton gin having my a invention applied thereto.

The drawing shows a saw cylinder I of usual construction having saws 2 flxed to the shaft 3 which is journaled at its opposite ends within the housing 4 of the gin. Seed cotton fed to the go saws within the ginning roll box A is ginned in the usual manner. The lint cotton is separated or pulled oil the seed as the saws pass through the closely spaced ginning ribs 4'. The lint adhering to the saws is carried down to the air blast as where it is blown ofl of the saws in to the lint .flue It. 'A large quantity of motes and trash are thrown off centrifugally from the saws into the mote removing chamber 5, but such motes and trash as are not thrown off into chamber 5 are 40 again acted upon and thrown out of the lint cotton by the air blast means as disclosed in my U. S. Patent No. 1,241,466, dated September 25, 1917. (See last paragraph, page 2, of this patent; also lines 29 to 36 on page 3.)

Al The bottom of the chamber 5 is formed by a substantially horizontal trough 6 having a partition 1 extending lengthwise therein. The partition forms a support for the upper strand 8 of an endless conveyor belt, the lower strand 9 thereof so being supported by bottom of the trough 6.

,The trough 6 with its conveyor belt is arranged 'slightly above the horizontal plane passing through the axis of the saw cylinder, and with one edge thereof quite close to the periphery of '55 said cylinder. A rear wall ill of the chamber 5 of the conveyor trough 6.

has its upper edge suitably secured to a transverse bar I I forming part of the framework of the gin; and, is inclined to the horizontal at such an angle as to deflect the motes upwardly in the general direction of the bar I I. An auxiliary deflector i plate l2 fixed to the edge of the bar ll serves as a baille to ensure that motes deflected by the inclined wall I0 shall fall on the conveyor belt and not on the rotating saw cylinder. 1

The side wall l3 of the trough 6 forms, in effect, 10 a division board between the saws and the mote conveying belt. The belt conveying means prevents any accumulation of motes on the top edge of the division plate l3 due to the wiping effect of the continuously moving belt closely located to the top edge of it.

The small space occupied vertically by the belt conveyor, permits the effective use of an air blast mote remover in such position that the inlet to the lint flue is so nearly vertical that a large amount of the moting can still be effected by air blast mechanism such as is disclosed in my U. 8. Patent No. 1,241,466, September 25, 1917.

The framework of the gin supports an air box H, which as usual, is arranged lengthwise of the saw cylinder or cylinders; and is connected to an air duct it which temiinates at the bottom A deflector plate It extends downwardly from the bottom of trough 6 and terminates at a slightdistance above the horizontal diameter plane of the saw cylinder.

The lower wall I! of the air duct II is bent at its upper edge to form with the plate It, a nozzle for directing the air against the saw cylinder so as to strip the saw teeth of all lint, and direct the lint into the lint flue it. The various air deflecting surfaces of this nozzle are arranged substantially as disclosed in my said U. S. Patent No. 1,241,466, and, therefore. need not be described in detail herein. I

In the structure described, it will be apparent that the heavier motes thrown on the saws by centrifugal force are collected in the chamber 5 and continuously removed by the strand I of the belt conveyor, thereby eliminating all possi- 5 bility of motes accumulating on the division board in quantities sufncient'to cause them to fall back on the saws. In addition to this feature of overhead moting, there is retained all the efliciency of the air blast underneath moting disclosed in my aforesaid U. S. patent.

The arrangement shown nearly doublesthe moting efficiency ofthe gin. Since only a portion of the motes pass below the deflector plate It, it will be obvious that the usual proportion of them will be thrown away by the airblast from the mouth of the lint flue.

What I claim is:

1. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in the horizontal plane passing through the axis of said cylinder for directing air against thesaw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, and a mote removing conveyor in said chamber directly above said nozzle and horizontal plane.

2. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly substantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless.

substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, and a deflecting plate arranged at an angle to said belt conveyor at the edge thereof remote from the said cylinder.

4. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with'the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, a deflecting plate arranged at an angle to said belt conveyor at the edge thereof remote from the said cylinder, and a second deflecting plate arranged above the edge oi the conveyor adjacent the saw cylinder.

5. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, and deflecting plates in said chamber for directing particles thrown from said cylinder onto said belt.

6. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a. conduit connected to said source and having a nozzle located substantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, and means for preventing the return to said cylinder of particles thrown there-' from into said chamber.

7. In a cotton gin, a gin saw cylinder, a source oi! supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in the horizontal plane passing 5 through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery pi said cylinder; a dead air chamber in communication with the upper part of said cylinder, a mote removing conveyor in said chamber directly above said nozzle and horizontal plane, and a division plate mounted between said saw cylinder and conveyor and having its upperedge extending slightly above and subject to the mote wiping action of said conveyor.

8. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle locatedsubstantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle .with the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, and a division plate mounted between said cylinder and conveyor belt and having its upper edge extending slightly above and close to the edge of said belt.

9. In a cotton gin, a gin saw cylinder,-a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in the horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, a deflecting plate arranged at an angle to said belt conveyor at the edge thereof remote from the said cylinder, and a division plate mounted between said cylinder and conveyor belt and having its upper edge extending slightly above and close to the edge of said belt.

10, In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in a horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, a deflecting plate arranged at an angle to said belt conveyor at the edge thereof remote from the said cylinder, a second deflecting plate arranged above the edge of the conveyor adjacent the saw cylinder, and a division plate mounted between said cylinder and conveyor belt and having its upper edge extending slightly above and close to the edge of said belt.

11. In a cotton gin, a gin saw cylinder, a source of supply of air under pressure, a conduit connected to said source and having a nozzle located substantially in a horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless substantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, deflecting plates in said chamber for directing particles thrown from said cylinder onto said belt, and a division plate mounted between said cylinder and conveyor belt and having its upper edge extending slightly above and close to the edge of said belt.

12. In a cotton gin, a gin saw cylinder, a source of supply or air under pressure, a conduit connected to said source and having a nozzle located substantially in a horizontal plane passing through the axis of said cylinder for directing air against the saw teeth of said cylinder at an angle to the horizontal plane, a lint flue directly below said nozzle and having a substantially vertical inlet opening adjacent the periphery of said cylinder; a dead air chamber in communication with the upper part of said cylinder, an endless sub 90 stantially horizontal belt conveyor in said chamber directly above said nozzle and horizontal plane, means for preventing the return to said cylinder of particles thrown therefrom into said chamber, and a division plate mounted between said cylinder and conveyor belt and having its upper edge extending slightly above and close to the edge of said belt.

' THADDEUS S. GRIMES. 

